2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/28913In this comment, I discuss a recent path-integral Monte Carlo calculation by Pearson, Pang, and Chen (Phys. Rev. A 58, 4796 (1998)). For bosons with a small hard-core interaction in a harmonic trap, the authors find a critical temperature which does not change with respect to the non-interacting gas. The calculation suffers from a serious discretization error of the many-particle density matrix.2 pages, 1 figureStatistical Mechanicstext